Atomistic Insight on Effect of Silica Fume on Intermolecular Interactions between Poly(carboxylate) Superplasticizer and Calcium Ions in Concrete DOI Creative Commons

Berik Rakhimbayev,

Б.Н. Мукашев,

P. Kusherova

et al.

Nanomaterials, Journal Year: 2024, Volume and Issue: 14(13), P. 1084 - 1084

Published: June 25, 2024

Understanding how poly(carboxylate)s of chemical admixtures interact with calcium ions in cement pore solutions the presence silica fume is fundamental to developing better for concrete production. In this work, intermolecular interactions a poly(carboxylate) superplasticizer type admixture was investigated via classical all-atom molecular dynamics (MD) simulations and Density Functional Theory (DFT) calculation methods fume. The MD simulation DFT results indicate that are interacting oxygen atoms carboxylate group PCE. interaction energy could mean an improved adsorption PCE segment ions. regard, it can be noted ester-based have onto comparison ether-based segment. Moreover, silicon dioxide improve

Language: Английский

Life cycle assessment of electricity generation by tire pyrolysis oil DOI
Michail Tsangas, Iliana Papamichael,

Pantelitsa Loizia

et al.

Process Safety and Environmental Protection, Journal Year: 2024, Volume and Issue: 186, P. 376 - 387

Published: April 8, 2024

Language: Английский

Citations

14
Production of Sustainable Mortar with Sodium Hydroxide Treated Rubber Crumb DOI Creative Commons
Abiodun Kilani, Bolanle Deborah Ikotun, Rasheed Abdulwahab

et al.

Iranian Journal of Science and Technology Transactions of Civil Engineering, Journal Year: 2025, Volume and Issue: unknown

Published: March 10, 2025

Language: Английский

Citations

0
Electrochemical Differences in the Passivity State of Reinforced Concrete for Two Mix Design Methods DOI Creative Commons
Jorge Alberto Briceño-Mena, M. Balancán-Zapata,

Eduardo de Jesus Pérez-García

et al.

Buildings, Journal Year: 2025, Volume and Issue: 15(8), P. 1293 - 1293

Published: April 15, 2025

Durable reinforced concrete is a fundamental requirement in marine environment, but at the same time it must be sustainable, meaning its production emits least amount of greenhouse gases. Hence, importance achieving optimal proportioning methods. This paper presents and discusses electrochemical differences passivity state specimens designed using two methods: M1 prioritizes ultimate strength element, M2 focuses on sustainability through optimized aggregate arrangement reduced cement content. Small beams (150 mm × 150 300 mm) with varying cover thickness (15 mm, 20 30 mm), water/cement ratios (0.45 0.65), all utilizing Portland composite (PCC 30R), were exposed tropical environment 50 m from seashore north Yucatan Peninsula for 700 days (passive state). Corrosion rate, corrosion potential, resistivity, internal conditions (relative humidity temperature) periodically measured. A key finding revealed that M2, despite sustainable advantage, tends to depassivation before M1, during years exposure while passive state.

Language: Английский

Citations

0
Development of sustainable HPC using rubber powder and waste wire: carbon footprint analysis, mechanical and microstructural properties DOI Creative Commons
Hasan Mostafaei, Massih Kelishadi, Hadi Bahmani

et al.

European Journal of Environmental and Civil engineering, Journal Year: 2024, Volume and Issue: 29(2), P. 399 - 420

Published: Sept. 10, 2024

Language: Английский

Citations

3
Atomistic Insight on Effect of Silica Fume on Intermolecular Interactions between Poly(carboxylate) Superplasticizer and Calcium Ions in Concrete DOI Creative Commons

Berik Rakhimbayev,

Б.Н. Мукашев,

P. Kusherova

et al.

Nanomaterials, Journal Year: 2024, Volume and Issue: 14(13), P. 1084 - 1084

Published: June 25, 2024

Understanding how poly(carboxylate)s of chemical admixtures interact with calcium ions in cement pore solutions the presence silica fume is fundamental to developing better for concrete production. In this work, intermolecular interactions a poly(carboxylate) superplasticizer type admixture was investigated via classical all-atom molecular dynamics (MD) simulations and Density Functional Theory (DFT) calculation methods fume. The MD simulation DFT results indicate that are interacting oxygen atoms carboxylate group PCE. interaction energy could mean an improved adsorption PCE segment ions. regard, it can be noted ester-based have onto comparison ether-based segment. Moreover, silicon dioxide improve

Language: Английский

Citations

0